Placing the lines in different groups only controls outward dialing access. It has nothing to do with inbound call handling.

Put voice mail extension ports into hunt group 450. Point CO lines 1-5 to hit HG450 at night. Save yourself a few steps.

For company B, you mentioned that you just want the line 6-10 calls to end up in a mailbox. You can program as many stations to ring in the day, night or special modes as you like. On page B, you can select a preset forward destination for only those lines. Mark this destination as 440 and then designate the appropriate mailbox number using the next button. Timing can be modified on page C for that same group of lines. The designated mailbox will then answer calls like an answering machine for those lines.

Ed Vaughn, MBSWWYPBX